Combination clock and radioreceiver



Oct. 30, 1934. H. R. VAN DEVENTER El AL 1,978,920

COMBINATION CLOCK AND RADIORECEIVER FiledApril 7, 1952 6 Sheets-Sheet 1INVENTORS HARRY JP. IAIYDEVl/VJ ZR ATTORNEY Oct 3 934- H. R. VANDEVENTER ET AL 1,978,920

COMBINATION CLOCK AND RADIORECEIVER Filed April 7, 1952 6 Sheets-Sheet 2INVENTORS JE ARRY R.VAJVDEVZ'1YTL7Z JQSZ'PH A. WARREN ATTORNEY Oct.30,1934. H. R. VAN DEVENTER ET AL. 1,973,920

COMBINATION CLOCK AND RADIORECEIVER FiledApril 7, 1932 6 Sheets-Sheet 3INVENTOR 8 114213) R. WNDEVENIZ'K ATTORNEY Oct. 30, 1934. H. R. VANDEVENTER ET AL 1,978,920

COMBINATION CLOCK AND RADIORECEIVER Filed April '7, 1932 6 Sheets-Sheet4 12 INVENTORS 10112120 12. )WVDEVENYEK JOSEPH A "HEREIN ATTORNEY Oct.30, 1934. H, R. VAN DEVENTER ET AL 1,978,920

COMBINATION CLOCK AND RADIOREGEIVER Filed;April 7, 1932 e Sheets-She et5 Mimi I INVENTORS HARRY R. WUEIZWYER ATTORNEY Oct. 30, 1934. H. R. VANDEVENTER ET AL 1,978,920

COMBINATION CLOCK AND RADIORECEIVER Filed April 7, 1932 6 Sheets-Sheet 6Q INVENTORS HARRY k. WJNDEITZVTER BgflJEP/l H. WARREN ATTORNEY 35 Figure4 is a vertical sectional View of Patented Oct. 30, 1934 PATENT OFFICEUNITED STATES COMBINATION CLOCK AND RADIO- RECEIVER Application April 7,1932, Serial No. 603,791

18 Claims.

of the radio receiving set except the loud speak- 1 er is readilyremovable from the cabinet without disassembly.

Another object is to provide a combination device of the class describedin which the clock may be set from the front of the cabinet and issupported in the cabinet without being mounted on the radio chassis. i

The invention consists substantially in the construction, combination,location and relative arrangement of parts, all as will be more fullyhereinafter set forth as shown by the accompanying drawings and finallypointed out in the appended claims.

In the accompanying drawings:

Figure 1 is a front elevation of a combina: tion clock and radioreceiving set embodying the invention;

Figure 2 is a side elevation of the set, Figure 1; 1

Figure 3 is a side elevation, partly in section, of the set shown inFigures 1 and 2;

the set, Figures 1 and 2, with the front of the set removed in order toshow the radio chassis and the loud speaker parts in place within thecabinet;

Figure 5 is a horizontal sectional view of the set on the line 5-5 ofFigure 4;

Figure 6 is a horizontal sectional view of the set on the line 66,Figure 4;

Figure 7 is a front view of theradio receiver chassis removed from theset, Figure 1;

Figure 8 is a side view of the chassis, Figure 7; and

Figure 9 is a typical circuit which may be used in the combination clockand radio receiving set.

For the sake of illustration, the invention will be described as appliedto a combination clock and radio receiver of the type above referred to,and although the invention will be disclosed herein and specific detailsof preferred emboditive of the invention except in so far as set forthin the accompanying claims.

The numeral 10 denotes acabinet which may be made of wood or othersuitable material. In the front of this cabinet is an opening 11 for theclock and an opening 12 for the dial and knobs of the radio receiverchassis. The cabinot also'has two openings 13, 14 in the sides thereofto permit egress of sound from the loud speaker as hereinafterdescribed. These openings may be covered by a cloth 15 to prevent theingress of dirt and the cloth may be protected by a grille 16.

Secured to the front of the cabinet is a clock movement generallydenoted by the numeral 17. This clock may be of any suitable type,either the ordinary hand wound spring driven type or as shown, a clockof the electric synchronous motor type.

The clock movement is preferably mounted upon a face plate 18 whichsecures the same to the cabinet and attached to this face plate is thedial and the hinged sash 19 containing the Q usual glass crystalcovering the dial and hands.

When an electric clock is used the motor isprovided-with a pair ofextended flexible wires (not shown) for the purpose of connecting it incircuit as hereinafter referred to.

Secured to the bottom of the cabinet is the base 20 preferably of metaland sufliciently strong to withstand the bending action of apiezo-electric crystal 21 which is insulatedly secured thereto by meansof the bolts 22, 22.

The bolts 22, 22 pass through clamps 23, 23 secured to the sides of thecrystals, said clamps having extending arms which are turned upwardly asshown at 24, 25 and which are at-' tached in any suitable manner to thelower 95, edges 26, 27 of a diaphragm 28, which covers practically theentire side walls and top of the interior of the cabinet.

This diaphragm is-preferably secured at 29 to the cabinet and whenvibrated by the action 100 of the piezo-electriccrystal in a knownmanner the sound produced finds egress through the openings 13, 14 inthe cabinet.

A pair of flexible wires (not shown) are connected to the piezo-electriccrystal, or to the 0 bolts 22, 22 which are in circuit therewith and maybe used to connect the crystal in circuit with the other parts of theradio set as hereinafter described. i

It will now be observed that the cabinet 10 is 1.

equipped with a clock and with a loud speaker and that thedrivingmechanism for the loud speaker is so disposed within the cabinetthat it does not occupy much room, and the diaphragm framework orchassis which may be of alumi- I num or other suitable material and ofany desired construction. It is preferably made from a flat stampinghaving theedges turned over and spot welded. w

The sides of the framework extend downwardly and are bent inwardly toform ears or lugs 31, 31, which engage the rails 32, 32 which areattached to the bottom framework of the cabinet. These rails areprovided on their rearwardends with the spring latches 33, 33, and thepins connecting with these spring latches engage and hold the lugs andconsequently the entire chassis securely in place. i

i In order to remove the chassis, the spring latches 33; 33 are pushedupward thereby withdrawing -the pins connected thereto from the holes inthe ears 31, 31 as shown in Figure 3 and the entire chassis is pulledout of the cabinet used the various instrumentalities to be mounteduponthe chassis are not described in detail but byway of illustration achassis is described in which thecircuit and component parts are asshown in Figures 7 to 9 inclusive, and include two 4 microfaredelectrolytic filter condensers designated by the numerals 34, 34 whichare bolted to the topwall 35 of the framework 30.

Mounted upon this top wall and secured thereto in anysuitablemanner is asuitable -2-gang tuning condenser 36, theprojecting shaft carrying themovable plates of same being equipped with a pulley 37 to whichisconnected a fleaible wire belt or other suitable member 38 which iswrapped about and secured to the lower pulley 39 secured to a sleeve40supported upon a shaft 41 upon which it is free to turn. Rigidlysecured to the sleeve 40 is the control knob 42 provided with the usualdial 43.

When the chassis is in place in the cabinet the dial 43 may be observedthrough the opening 44 in the plate 45 and by turning the knob 42 thetuning condenser may be adjusted in the usual manner. I

The shaft 41 extends outwardly through the knob 42 and has upon itsouter end a volume control knob 46 and secured to its inner end asuitable volume control shunt 47, supported on the intermediate wall 48of the framework 30.

Between the horizontal walls 35 and 48 is suitably secured a support 49of insulating material on which are mounted the usual flex-- iblesprings or other socket members, some of which are shown at 50, 50 forthe vacuum tubes 51, 51. The tubes shown in the accompanying drawingsare of a special type but it will be understood that any suitable typemay be used. These tubes are provided with the usual insulating bases52, 52 which pass through holes in the topwall 35 and the usualprojecting pin ment current to the tubes 51, 51 it being underthroughholes in the shields so thatthey may be connected in circuit.

A power transformer 56 is mounted on a side wall 57 of the framework 30and supplies filastood that any suitable number of tubes may be employeddepending upon the circuit used. The choke coil for the filter circuitis shown at 58 and is mounted on a side wall 59 of the framework.Grounding condenser 60 may be mounted upon the intermediate horizontalwall 48 as shown. 1 I

a The output choke coil 61 is also mounted on the intermediate wall 48as shown in Figure 4. e The foregoing constitute the main parts of 106the chassis assembly and there are a few additionalparts used inconnectionwith the circuit shown in Figure 9 which are mounted within orupon the complete chassis as shown in Figures 7 and 8, and these partswill be described in connection with the circuit shown in Figurei).

As the shape and location of these parts may vary within wide limitsthey have not been shown in connection with Figures 3 to 6 inclusive forthe sake of clarity.

The complete chassis as just described is wired up as shown in Figure 9,a binding post 62 (not shown) being insulatedly mounted on the chassisfor connection to the antenna. A binding post 63 is connected to theframework 30 and constitutes a common ground for thegro'un'dside of allof the various circuits.

A switch indicated diagrammatically at 64 in Figure 9 forms part of thevolume control shunt 47 and is operated by the knob 46. When the knob isturned from the extreme left hand position clockwise it first closes theswitch and then places more or less of a resistance 47 in circuit. Assuch combination switches and resistances are in common use they are notherede scribed in detail.

The detector tube in this circuit is indicated at 65; and this togetherwith thefour. amplifier tubes 51,-are connected in circuit as shown, theplates and external grids of said tubes being connected to the platevoltage feed 66 of the igansformer circuit through suitableresistances Ahigh resistance 68 connects from the plate voltage feed to, the ground.A mercury vapor rectif er tube 69 is provided in circuit with thewindings of the transformer 56, the usual 110 volt alternating currentsupply being connected to the binding posts 70 insulatedly supported atany suitable place on the chassis. When an electric clock is used, thedriving motor of same is connected directly across the binding posts 70as shown at 1'7, Figure9, so that the clock will not be disconnectedwhen the switch 64 is operated. i

A pair of insulatedly supported binding posts '71, 71 are provided towhich the wires from the loud speaker herebefore referred to are con:

nected when the chassis is in place, the piezo I50 tenna 62 and ground63.

electric loud speaker being designated by the numeral 72 in Figure 9.

A small lamp 73 is mounted on the intermediate wall 48 and is connectedacross the filament supply circuit as shown. When the radio set isturned on, the light from this lamp shines through an aperture in thefront wall '74 of the framework and shines through the translucent dial43 which is carried on the knob 42 and the dial may be observed throughthe opening 44 in the plate 45, Suitable connections '75, 75 (not shown)are provided on the chassis in order that when the same is in place thewires from the clock motor 17 (Figure 9) may be connected thereto. v.

In operation the chassis shown in Figure 7 carrying all of the parts ofthe radio set except the loud speaker is pushed into place in thecabinet as previously described and when in place occupies the positionin respect to the loud speaker and clock as shown. in Figures 3 and 4,the connections being made between the speaker and its binding posts 71and between the binding posts '75, 75 for the connections to the clock,an-

Connections being made and the terminals 70 connected to a suitablsource of alternating current supply, the clock will immediately proceedto operate and by opening the hinged sash 19 the clock hands may be setwithout removing the chassis from the cabinet.

By operating the projecting knobs 42 and 46, the radio set may be turnedon and the tuning condensers operated and the volume of the setregulated.

While the radio set is in operation the lamp 73 will be lit. When theradio set is not in operation this lamp will be extinguished as it iscontrolled by the switch 64.

, If it is desired to remove the radio chassis from the cabinet the samemay be removed as heretofore described.

Thecabinet may be provided with a removable back (not shown) and ispreferably provided with rubber cushioned feet.

If desired, the detector tube and any of the amplifiers 51 may beshielded by means of the metallic shields 76 secured to the top wall 26of the framework.

What is claimed is:

1. A radio receiver including a cabinet, a framework removably supportedin said cabinet and containing radio detecting, amplifying and tuningmeans, a diaphragm surrounding the side walls of said framework, andmeans comprising a speaker driving mechanism for vibrating saiddiaphragm mounted on said cabinet subjacent said framework.

2. A radio receiver including a cabinet having a base portion, aframework adapted to support parts of the radio receiver including radiodetec ting, amplifying and tuning means removably supported in saidcabinet above the base portion thereof, a diaphragm within said cabinethaving an edge extending downwardly toward the base thereof, and meanscomprising a speaker driving mechanism for vibrating said diaphragmmounted in the base portion of said cabinet below said framework.

3. A radio receiver including a cabinet having a bottom portion, aframework removably supported in said cabinet above the bottom thereofand containing radio detecting, amplifying and tuning means, a diaphragmhaving an edge extending downwardly toward the bottom of said crystalsecured to said plate, and a diaphragm located in said cabinet abovesaid plate, secured to said crystal and adapted to be vibrated thereby.

5. A radio receiver including a cabinet having openings in its sides andcontaining radio detesting; amplifying and tuning means, a plate closingthe bottom of said cabinet, a piezoelectric crystal secured to saidplate, and a diaphragm secured to said crystal and adapted to bevibrated thereby said diaphragm extending around the inner side walls ofthe cabinet and having free vibratory portions adjacent theopeningstherein. p

6. A radio receiver including a cabinet, and containing radio detecting,amplifying and tuning means, a base member adapted to close the bottomof said cabinet, a piezo-electric crystal secured to said member, adiaphragm within the cabinet having its surface in extended relation tothe inner side walls and top thereof, and means for detachably securingsaid diaphragm to said crystal. i

7. A radio receiver including a cabinet having a rounded top andcontaining radio detecting, amplifying and tuning means, a base membersecured to said cabinet, a piezoelectric crystal secured to said basemember, a diaa phragm within said cabinet secured to said crystal andextending along the sides andacross the top of the cabinet, and meansfor securing said diaphragm to the inner wall of the cabinet at a pointintermediate its ends.

8. A radio receiver including a cabinet, a piezo-electric crystalmounted in said cabinet, a diaphragm connected to said crystal in said.

cabinet in extended relation to the side walls an open space within thecabinet, a framework adapted to support parts of said radio setremovably positioned within said space within the cabinet, a tuningcondenser and a volume control mounted on said framework, and controlmeans including knobs connected to said condenser and volume controlextending from the front of said cabinet.

9. A radio receiver including a cabinet having a front wall, a frameworkhaving a top wall and removably supported in said cabinet, a variablecondenser having a shaft and mounted upon said top wall, a sleevemounted in said framework and extending from the front thereof andthrough the front wall of said cabinet, means connecting said sleeve andshaft whereby the latter may be movedby rotating the former, a shaft insaid sleeve extending outside said framework and cabinet, and acombination volume control and switch carried on said frameworkconnected to said last shaft and movable therewith. i

10. A radio receiver including a cabinet, a framework removablysupported in said cabinet, a variable condenser having a shaft supportedon top of said framework, a control shaft supa sleeve surrounding saidshaft, a connection between said sleeve and the shaft of said condenser,a volume control connected to said control shaft and supported in saidframework, and knobs mounted upon said sleeve and shaft located outsidesaid cabinet whereby the control of said radio receiver may be effected.11. A radio receiver including a cabinet, a framework removablysupported therein said framework having substantially :closed sides,front and top, and being open in theback and bottom, a variablecondenser mounted on the top of said framework, a support of insulatingmaterial within the framework and below openings therein socket memberssecured to said support,.a plurality of vacuum tubes mounted in saidsocketmembers through the openings in said framework, volume controlmeans mounted onsaid framework below said condenser, and meansforadjusting said volume control means and said condensers extending fromsaid framework and through the wall of said cabinet.

12. A radio receiver including a cabinet, a

clock mechanism mountedin the front thereof, a hinged sash mounted onthe front of said cabinet and adapted to cover the dial and hands ofsaid clock, a shafthaving a sleeve rotatable thereon extending from theface of said cabinet below said clock knobs securedto said sleeve andshaft, a tuning condenser and a control device connected to said sleeveand shaft and movable therewith, a framework upon which said controldevice, condenser, sleeve, shaft and knobs are supported, said frameworkbeing removable as a unit from the cabinet without disturbing saidclockand connections in said cabi net whereby said clock and radioreceiver may be operated from a single current source.

13. In a radio receiver a removable chassis comprising a frameworkhaving an apertured top wall, filter condensersmounted on said wall,variable tuning condensers comprising a framework carrying fixed andmovable plates and a shait mounted upon said wall, vacuum tubes in theaperturesin said wall, a support of insulating material having socketmembers thereon positioned below the apertures in said wall and adaptedto receive the terminals of said tubes, metallic shields for said tubesmounted upon said wall,,a cabinet adapted to contain said chassis and aspeaker having a diaphragm secured to said cabinet and surrounding thetop and sides of said chassis. 1

14. In a radio receiver a chassis comprising a frameworkhaving a topwall, a variable condenser mounted thereon having a shaft, a pluralityof tuning coils mounted below said top well, said coils having shieldssecured to said wall, a volume control member secured to said chassisbelow said tuning coils, means. for regullatingsaid volume controlextending from the frontof said chassis, means supported by said volumecontrol means and connected to the shai't of said variable condenser andextending outsidesaid chassis whereby the capacity of said condenser maybe manually varied, a plurality of vacuum tubes mounted upon saidchassis, a transformer mounted within the chassis and a cabinet havingmeans engagingprojecting lugs on said chassis whereby the chassiscontaining all of the, aforementionedparts maybe remove ably locked inposition within thecabinet. J 4 g1 15. A combination clock and radioreceiver comprising a cabinet. having openings, in each side andthefront thereof, an electric clock se cured in the from opening of saidcabinet, a loud speaker diaphragm adjacent the side openings in saidcabinet, means for, actuating said diaphragm mounted inthe bottom ofsaid cabinet leaving a clear space, in the interior thereof, aromovableichassis adapted to carry upon its walls'radio receiver partsto operate, said means, said chassis being positioned in the:clear &mcein the interior of, said 2 cabinet, control means mounted upon saidchassis and extending through the front of said cabinet andta circuitincluding a .source of .acurrent, connected to said chassis and adaptedto furnish current to saidradio receiver parts and to said electric:clock mechamsm. a a i 16.1 A combinationclock .and radio receivercomprising an outer. cabinet, :an electricclock secured to the frontwall .of said cabinet inlthe upper portion thereof, aloud speaker havingits actuating mechanism, secured to the bottom of said cabinet and itsdiaphragm adjacent the side walls thereof, a removable chassis adaptedto carry upon its walls radio receiver parts including a variablecondenser positioned the upper part of said chassis, said condenserhaving a shaft substantially parallel to said clock shaft, control meansfor said condenser including a shaft extending throughthe wallof saidcabinet, volume control means for said loud speaker mounted upon saidchassis and including means extending through the front of said cabinetforoperating said control means and a circuit including a sourceofycurrent connected to said chassis and adaptedto furnish current tosaid radio receiver parts and to said electric clock. 1 i i 1'7. Thecombination as claimed in claim 16 including a switch controllingtheoperation of said radio receiver operable from outside said cabinetand mounted uponsaid chassis and removable therewith. A i

18. A combination clock and radio-greceiver comprising a cabinet, anelectric clock secured to a wall of said cabinet, aloud speaker havingits actuating means mountediri the bottom of said cabinet and itsdiaphragm adjacent the inner side walls thereof, [a removable chassisadapted-to-carry upon its walls radio receiver parts to operate saidspeaker actuating means, a volume control forsaidspeaker mounted uponsaid chassis, a variable condenser mounted upon said chassis, a switchassociated with said vol ume control means, ,means including concentrioshafts connected to said condenser and volume control ,means andextending outwardly connected to the shaft associated with saidcondenser, a lamp mounted on ,said chassis adapted to illuminate saiddialand a circuit including a source of current connected to saidchassis and adapted to furnishcurrent to said radio receiver parts, saidlamp and said clock.

HARRY R. VAN DEVENTER. JOSEPH A. WARREN. 1

through a wall of said cabinet, a graduated, dial

